Prime minister Ismail Sabri promised swift aid for the flood-affected people and initial funding of 100 million ringgit(23.7 million dollars) to repair damaged houses and infrastructure.
Dozens of buses in and around the capital were suspended along with train services to the port city of Klang.
Operations at three water treatment plants in Selangor were disrupted, with taps expected to run dry for thousands of people in parts of the state as well as the capital.
More than 66,000 personal from the police, army and fire department were mobilized.
Yusof, who lived in Selangor state for more than 30 years said that floods were the worst she had ever seen, “I have never experienced floods this bad”. I want to go home but am not sure how we are going to get there, she said.
The government website showed water exceeding dangerous levels in six central and northern states on Sunday afternoon even though rainy weather slowed nationwide.
Malaysia’s worst flooding in decades took place in 2014, forcing some 118,000 people to flee.
This year, many parts of the world experienced some of the worst floodings in years which many scientists blamed it on climate change.